Cross-Referencing Silane Trade Names Against Cas 56706-10-6 Standards
Mapping Si 75 and A-1589 Trade Names to Verified CAS 56706-10-6 Identities
In the global supply chain for rubber additives, procurement managers frequently encounter multiple trade names for the same chemical structure. Bis(triethoxysilylpropyl)disulfide, universally identified by CAS 56706-10-6, is commonly referenced in legacy documentation as Si 75, A-1589, or Z-6920. These identifiers represent the same molecular configuration: a disulfide bridge connecting two triethoxysilylpropyl groups. Understanding this equivalence is critical for maintaining formulation consistency when switching suppliers or validating incoming raw materials.
At NINGBO INNO PHARMCHEM CO.,LTD., we prioritize chemical identity verification over marketing nomenclature. When auditing supply chains, it is essential to recognize that variations in trade names often stem from historical branding rather than chemical differences. For example, the transition from older KH- series designations to modern alphanumeric codes reflects an industry-wide shift toward systematic nomenclature, not a change in the underlying silane coupling agent chemistry. Procurement teams should mandate CAS number verification on all purchase orders to prevent specification drift.
Technical Specifications and Purity Grades Labeling for Bis(triethoxysilylpropyl)disulfide
Technical data sheets for TESPD must be evaluated against standardized physical parameters rather than proprietary grade names. While purity levels are generally high, minor variations in distillation cuts can affect the concentration of active sulfur available for vulcanization. The following table outlines the typical physical properties expected for high-grade CAS 56706-10-6 material. Please note that specific batch values may vary slightly based on production runs.
| Parameter | Typical Value | Test Method |
|---|---|---|
| Purity (GC) | ≥ 95.0% | Gas Chromatography |
| Density (20°C) | 1.08 - 1.10 g/cm³ | ASTM D4052 |
| Refractive Index (25°C) | 1.485 - 1.495 | ASTM D1218 |
| Sulfur Content | 22.0% - 24.0% | Elemental Analysis |
| Color (APHA) | ≤ 150 | Visual/Photometric |
For precise quality control, always request the latest TESPD chemical specifications directly from the manufacturer. Relying solely on trade names without verifying these physical constants can lead to inconsistencies in rubber compound curing rates.
Auditing COA Parameters and Manufacturer Code Variations in Z-6920 Silane Procurement
When reviewing Certificates of Analysis (COA) for Z-6920 or equivalent codes, engineers must look beyond standard purity metrics. A critical non-standard parameter often overlooked is the viscosity behavior during cold chain logistics. TESPD can exhibit increased viscosity or slight turbidity when exposed to temperatures below 10°C during winter shipping. This physical change is reversible upon warming but is frequently mistaken for degradation or contamination by incoming quality control teams.
Furthermore, trace impurities from the synthesis process can affect the final product color during mixing, particularly in light-colored rubber applications. Establishing internal thresholds for silane batch acceptance that account for these temperature-dependent physical states is essential. Procurement specifications should explicitly state that minor viscosity shifts due to thermal history do not constitute a rejection criterion, provided the chemical purity remains within the specified range upon stabilization at room temperature.
Bulk Packaging Codes and Identity Verification for CAS 56706-10-6 Compliance
Physical packaging integrity is as vital as chemical specification for maintaining product quality. Bis(triethoxysilylpropyl)disulfide is typically shipped in 210L drums or IBC totes equipped with nitrogen padding to prevent moisture ingress. Hydrolysis of the ethoxy groups can occur if seals are compromised, leading to gelation within the container. Verification procedures should include checking drum codes against shipping manifests to ensure the correct grade has been loaded.
Efficient handling of these bulk containers directly impacts production efficiency. Improper storage or handling can lead to material loss or contamination, necessitating strategies for optimizing silane input utilization throughout the receiving and dispensing process. Identity verification labels on packaging must match the CAS number 56706-10-6 exactly, regardless of the supplier's internal product code. This ensures traceability and safety compliance during warehouse operations without relying on ambiguous trade names.
Navigating Global Product Model Changes and Specification Codes for Legacy KH- Series
The chemical industry has seen a systematic shift away from the legacy KH- series nomenclature, which originated from early classification systems limited to a few typical products. As the range of organofunctional silanes expanded, older models like KH-75 became insufficient for distinguishing specific structural variations. Modern procurement systems now utilize alphanumeric codes that indicate functional groups and alkoxyl structures more precisely.
For instance, legacy documentation referencing KH-75 should be cross-referenced to CAS 56706-10-6 to ensure compatibility with current formulations. Recent industry notifications indicate a move toward unified global product model systems to reduce confusion in domestic and international markets. Procurement managers should update their internal databases to map these legacy codes to verified CAS identities. This prevents ordering errors where a legacy code might be misinterpreted by a new supplier using modern nomenclature standards.
Frequently Asked Questions
Do different trade names like Si 75 and A-1589 indicate different chemical formulations?
No, these trade names typically refer to the same chemical structure, Bis(triethoxysilylpropyl)disulfide, identified by CAS 56706-10-6. The variations are branding distinctions rather than chemical differences.
Can I use a KH-75 specified material as a direct replacement for CAS 56706-10-6?
Yes, KH-75 is a legacy designation for the same disulfide silane. However, you should verify the current COA to ensure modern purity standards are met before substitution.
Why does the viscosity of the silane change during winter shipping?
TESPD can become more viscous or turbid at low temperatures. This is a physical response to cold and reverses upon warming, not a sign of chemical degradation.
Sourcing and Technical Support
Ensuring the integrity of your silane supply chain requires rigorous verification of chemical identities beyond surface-level trade names. NINGBO INNO PHARMCHEM CO.,LTD. supports procurement teams with detailed technical documentation and consistent manufacturing standards. Ready to optimize your supply chain? Reach out to our logistics team today for comprehensive specifications and tonnage availability.